Zoom control is limited in terms of responsiveness

As I understand, it is currently only possible to set:

1. A fixed zoom level relative to the standard size of the PDF document
2. A zoom level to fit 100% width of the container element.

What I'm trying to achieve is similar to default Mozilla PDF Viewer behaviour – set a responsive zoom level that fits the container width, but keep a few pixels of blank space on each side. In a small container, this will make the UI less crowded.

### Example of what I would like to achieve
https://github.com/user-attachments/assets/c9b25c96-7d64-4c5a-a109-2c5bebffc429

Is there any way I can implement this in the current version of the library? If not, could you please provide such ability in future updates? Thanks.